World powers began the second day of nuclear talks with Iran on Wednesday, Feb 27, hoping for a positive response to their new offer of lifting some sanctions in return for concessions on Tehran's most sensitive atom work, Reuters reported.

The six powers - United States, Russia, China, France, Britain and Germany - made the offer during talks that started in the Kazakh city of Almaty on Tuesday, their first meeting with Iranian negotiators in eight months.

Western diplomats say a breakthrough is unlikely in Almaty but they hope to schedule more talks soon.